initial skeleton for accepting UMA/GAN connections

1 files changed, 232 insertions, 0 deletions

diff --git a/openbsc/src/osmo-ganc/main.c b/openbsc/src/osmo-ganc/main.c
new file mode 100644
index 000000000..882df6ab0
--- /dev/null
+++ b/openbsc/src/osmo-ganc/main.c
@@ -0,0 +1,232 @@
+/* (C) 2012 by Harald Welte <laforge@gnumonks.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "../../bscconfig.h"
+
+#include <osmocom/core/application.h>
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/vty/vty.h>
+
+#include <osmocom/sccp/sccp.h>
+
+#include <openbsc/debug.h>
+#include <openbsc/signal.h>
+#include <openbsc/vty.h>
+
+
+static const char *config_file = "osmo-ganc.cfg";
+static const char *rf_ctrl = NULL;
+extern const char *openbsc_copyright;
+static int daemonize = 0;
+
+static void print_usage()
+{
+	printf("Usage: osmo-ganc\n");
+}
+
+static void print_help()
+{
+	printf("  Some useful help...\n");
+	printf("  -h --help this text\n");
+	printf("  -D --daemonize Fork the process into a background daemon\n");
+	printf("  -d option --debug=DRLL:DCC:DMM:DRR:DRSL:DNM enable debugging\n");
+	printf("  -s --disable-color\n");
+	printf("  -T --timestamp. Print a timestamp in the debug output.\n");
+	printf("  -c --config-file filename The config file to use.\n");
+	printf("  -l --local=IP. The local address of the MGCP.\n");
+	printf("  -e --log-level number. Set a global loglevel.\n");
+}
+
+static void handle_options(int argc, char **argv)
+{
+	while (1) {
+		int option_index = 0, c;
+		static struct option long_options[] = {
+			{"help", 0, 0, 'h'},
+			{"debug", 1, 0, 'd'},
+			{"daemonize", 0, 0, 'D'},
+			{"config-file", 1, 0, 'c'},
+			{"disable-color", 0, 0, 's'},
+			{"timestamp", 0, 0, 'T'},
+			{"local", 1, 0, 'l'},
+			{"log-level", 1, 0, 'e'},
+			{0, 0, 0, 0}
+		};
+
+		c = getopt_long(argc, argv, "hd:DsTc:e:",
+				long_options, &option_index);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'h':
+			print_usage();
+			print_help();
+			exit(0);
+		case 's':
+			log_set_use_color(osmo_stderr_target, 0);
+			break;
+		case 'd':
+			log_parse_category_mask(osmo_stderr_target, optarg);
+			break;
+		case 'D':
+			daemonize = 1;
+			break;
+		case 'c':
+			config_file = strdup(optarg);
+			break;
+		case 'T':
+			log_set_print_timestamp(osmo_stderr_target, 1);
+			break;
+		case 'e':
+			log_set_log_level(osmo_stderr_target, atoi(optarg));
+			break;
+			break;
+		default:
+			/* ignore */
+			break;
+		}
+	}
+}
+
+extern enum node_type bsc_vty_go_parent(struct vty *vty);
+
+static struct vty_app_info vty_info = {
+	.name 		= "OsmoGANC",
+	.version	= PACKAGE_VERSION,
+	.go_parent_cb	= bsc_vty_go_parent,
+	.is_config_node	= bsc_vty_is_config_node,
+};
+
+extern int bsc_shutdown_net(struct gsm_network *net);
+static void signal_handler(int signal)
+{
+	struct osmo_msc_data *msc;
+
+	fprintf(stdout, "signal %u received\n", signal);
+
+	switch (signal) {
+	case SIGINT:
+		osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL);
+		sleep(3);
+		exit(0);
+		break;
+	case SIGABRT:
+		/* in case of abort, we want to obtain a talloc report
+		 * and then return to the caller, who will abort the process */
+	case SIGUSR1:
+		talloc_report(tall_vty_ctx, stderr);
+		talloc_report_full(tall_bsc_ctx, stderr);
+		break;
+	case SIGUSR2:
+#if 0
+		if (!bsc_gsmnet->bsc_data)
+			return;
+		llist_for_each_entry(msc, &bsc_gsmnet->bsc_data->mscs, entry)
+			bsc_msc_lost(msc->msc_con);
+#endif
+		break;
+	default:
+		break;
+	}
+}
+
+
+void gsm_net_update_ctype(struct gsm_network *network)
+{
+}
+
+int main(int argc, char **argv)
+{
+	struct osmo_msc_data *msc;
+	struct osmo_bsc_data *data;
+	int rc;
+
+	tall_bsc_ctx = talloc_named_const(NULL, 1, "openbsc");
+
+	osmo_init_logging(&log_info);
+
+	/* enable filters */
+
+	/* This needs to precede handle_options() */
+	vty_info.copyright = openbsc_copyright;
+	vty_init(&vty_info);
+	//bsc_vty_init(&log_info);
+
+	/* parse options */
+	handle_options(argc, argv);
+
+	/* seed the PRNG */
+	srand(time(NULL));
+
+	/* initialize SCCP */
+	sccp_set_log_area(DSCCP);
+
+
+	ganc_server_start(NULL, 14001);
+
+#if 0
+	llist_for_each_entry(msc, &bsc_gsmnet->bsc_data->mscs, entry) {
+		if (osmo_bsc_msc_init(msc) != 0) {
+			LOGP(DNAT, LOGL_ERROR, "Failed to start up. Exiting.\n");
+			exit(1);
+		}
+	}
+
+
+	if (osmo_bsc_sccp_init(bsc_gsmnet) != 0) {
+		LOGP(DNM, LOGL_ERROR, "Failed to register SCCP.\n");
+		exit(1);
+	}
+
+	if (osmo_bsc_audio_init(bsc_gsmnet) != 0) {
+		LOGP(DMSC, LOGL_ERROR, "Failed to register audio support.\n");
+		exit(1);
+	}
+#endif
+	signal(SIGINT, &signal_handler);
+	signal(SIGABRT, &signal_handler);
+	signal(SIGUSR1, &signal_handler);
+	signal(SIGUSR2, &signal_handler);
+	osmo_init_ignore_signals();
+
+	if (daemonize) {
+		rc = osmo_daemonize();
+		if (rc < 0) {
+			perror("Error during daemonize");
+			exit(1);
+		}
+	}
+
+	while (1) {
+		osmo_select_main(0);
+	}
+
+	return 0;
+}